which file is doing the validation

[puranisank]

Hi, The following code is part of   \"ecommerce\\order\\billsettings.ftl\".The field \"nameOnCard\" is mandatry. Which file is doing the client side validations. Which word in the ftl file to recognize the validating file to identify exactly that this is mandatory.I could not find any javascript statements or any method calls by the field.<tr>
<td width=\"26%\" align=right valign=middle><div class=\"tabletext\">Name on Card</div></td>
<td width=\"5\"> </td>
<td width=\"74%\">
<input type=\"text\" class=\"inputBox\" size=\"30\" maxlength=\"60\" name=\"nameOnCard\" value=\"${creditCard.nameOnCard?if_exists}\">
*</td>
</tr>
<tr>ThanksPurani